Find out more about how our sun's position in the sky changes due to Earth's rotation, revolution, and tilt. Learn from the experts -- Dr. Alex Young and Dr. Nicki Viall explain these connections so students understand patterns within the Earth-sun relationship.

A number of people who've seen NASA's annual lunar phase and liberation videos have asked what the other side of the Moon looks like, the side that can't be seen from the Earth. This video answers that question. The imagery was created using Lunar reconnaissance Orbiter data. This video is public...

Ready for liftoff? NASA has created a new playlist to excite elementary and middle level students about space science. available on the YouTube Kids app for both iOS and Android platforms, the playlist features NASA videos that focus on our solar system and the instruments NASA uses to study the...

From year to year, the moon never seems to change. Craters and other formations appear to be permanent now, but the moon didn't always look like this. Thanks to NASA's Lunar Reconnaissance Orbiter, we now have a better look at some of the moon's history. Learn more in this video!

Of the many ways Earth is polluted, light pollution may be the least talked about. It's not an illusion; astronomers measure it from one to nine on the Bortle scale, and earlier this year, one study suggested that light pollution may be causing spring to come earlier. This short film, shot mainly in...

From the data-collecting endeavors of the rover Curiosity to the process of constructing Orion, a spacecraft designed for eventual travel to Mars, this 10-minute presentation highlights NASA's many efforts supporting current and future explorations of the Red Planet. Watch the presentation in the...

The following animation shows both the helicentric model and geocentric model with three objects: the Sun (yellow), Earth (blue) and Mars (red). Both models produce the same effect as viewed from the Earth.

Plotted theoretical crater diameter sizes vs. meteorite diameters. Then, they worked backwards and determine the probable size of the 65 mya meteorite, the Barranger meteorite, and a few others by using Google earth to measure crater diameters. For providing some basic information from a meteorite...